21-04-2016 дата публикации
Номер: US20160110536A1
Improved techniques to control utilization of accessory devices with electronic devices are disclosed. The improved techniques can use cryptographic approaches to authenticate electronic devices, namely, electronic devices that interconnect and communicate with one another. One aspect pertains to techniques for authenticating an electronic device, such as an accessory device. Another aspect pertains to provisioning software features (e.g., functions) by or for an electronic device (e.g., a host device). Different electronic devices can, for example, be provisioned differently depending on different degrees or levels of authentication, or depending on manufacturer or product basis. Still another aspect pertains to using an accessory (or adapter) to convert a peripheral device (e.g., USB device) into a host device (e.g., USB host). The improved techniques are particularly well suited for electronic devices, such as media devices, that can receive accessory devices. One example of a media device is a media player, such as a hand-held media player (e.g., music player), that can present (e.g., play) media items (or media assets). 1. An electronic device comprising:an authentication controller coupled to execute an authentication procedure with an external electronic device coupled to the electronic device; anda boost convert coupled to receive a first power supply voltage and further coupled to be enabled by the authentication controller, where when the boost converter is enabled by the authentication controller, the boost converter boosts the first power supply voltage to a second power supply voltage and provides the second power supply voltage, the second power supply voltage higher than the first power supply voltage, and where when the boost converter is not enabled by the authentication controller, the boost converter does not provide the second power supply voltage.2. The electronic device of wherein when the boost converter is not enabled by the authentication ...
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